ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS

WIPO Patent Application WO/2010/008095

A1

Disclosed is an electrophotographic photoreceptor that can continually exhibit the effect of relaxing stress of contact with a contact member or the like and, at the same time, has an excellent potential stability during repeated use.  Also disclosed are a process cartridge comprising the electrophotographic photoreceptor, and an electrophotographic apparatus.  The electrophotographic photoreceptor comprises a charge transport layer as a surface layer.  The charge transport layer comprises a charge transport material and at least one resin of a polyester resin A comprising a siloxane site, a polyester resin C, and a polycarbonate resin D.  The content of the siloxane site in the polyester resin A is 10 to 40% by mass based on the total mass of the polyester resin A.  The charge transport layer has a matrix-domain structure that comprises a matrix and a domain formed of the polyester resin A provided in the matrix.  The matrix is formed of the charge transport material and at least one resin of the polyester resin C and the polycarbonate resin D.

OGAKI HARUNOBU (JP)
UEMATSU HIROKI (JP)
OCHI ATSUSHI (JP)

PCT/JP2009/063230

January 21, 2010

July 16, 2009

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CANON KK (JP)
OGAKI HARUNOBU (JP)
UEMATSU HIROKI (JP)
OCHI ATSUSHI (JP)

G03G5/05; G03G5/047; G03G5/06

JP2007199686A	2007-08-09
JP2003302780A	2003-10-24
JP2002214807A	2002-07-31
JPH08234468A	1996-09-13
JP2007199688A	2007-08-09
JPH03185451A	1991-08-13
JPH11194522A	1999-07-21
JP2000075533A	2000-03-14
JP2002128883A	2002-05-09
JP2003302780A	2003-10-24
JP2007004133A	2007-01-11
JP2005242373A	2005-09-08

See also references of EP 2306248A4

OKABE, Masao et al. (Fuji Bldg. 2-3, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, JP)

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